Frederick w



(No Model.)

I W TAYLOR SCOOP BALANCE DEVICE.

No. 548,479. Patented 00t.22, 1895.

Maw/M INVENTOR ATTORNEY WITNESSES.

M. PNO'TWUTIIQWASHI NGTON. D

UNITED STATES PATENT OFFICE.

FREDERICK \V. TAYLOR, OF ST. JOHNSBURY, VERMONT, ASSIGNOR TO THE E. 85T. FAIRBANKS & COMPANY, OF SAME PLACE.

SCOOP-BALANCE DEVICE.

$PECIFIGATION forming part of Letters Patent No. 548,479, dated October22, 1895.

Application filed June 22, 1 395.

To all whom it may concern:

Be it known that I, FREDERICK W. TAYLOR, a citizen of the United States,residing at St. Johnsbury, in the county of Caledonia, State of Vermont,have invented certain new and useful Improvements in Scoop-BalanceDevices, of which the following is a description, reference being bad tothe accompanying drawings, and to the letters of reference markedthereon.

My invention relates to an improvement in scales, and particularly toanimproved scoopbalance device, and my object is to provide a device inwhich the load is normally supported by the platform; but when the scoopis placed on the platform the weight is supported from the frame, theload on the platform being therefore unchanged, whereby a device muchsimpler and less expensive to manufacture than any of which I am awareis provided.

Prior to my invention it has been proposed to balance the scoop by aweight that is picked up, said weight being supported outside of andindependent of the platform or weighing mechanism of the scale; and ithas also been proposed to have a pick-up weight-balancing device wherethe weight is made to counterbalance the weight of the scoop by an armpressing on the under side of the scale-platform. In another device aload or counterbalance is supported on the end of the weighing-beam whenthe scoop is notin use; but when in use the load is picked up from theweighing-beam and supported from the platform by a shorter fulcrum, thedifference in the fulcrum compensating for the weight of the scoop. Instill another device by operating a lever underneath the platformthrough a projection on the scoop a cage having a ball supported on theend of the beam is dipped, and by the ball rolling from one end of thecage to the other the weight of or removal of the scoop is compensated.In still anotherdevice a lever carrying a weight is pivoted to thescale-platform, one end of said lever projecting above the platform, sothat when the scoop is put on it strikes the projecting portion andforces the same down,the weight balancing the platform. The presentinvention, however, distinguishes from all Serial No. 553,673. (Nomodel.)

these in that it comprises a lever pivoted to the scale-platform, havingone end provided with a permanent weight and having on its other arm aweight, which, under certain cir- 55 cumstances, may be free of the armof the lever. When itis not desired to use the scoop, the preponderanceof weight is in favor of the permanent weight and the long arm of thelever bears against the under side of the scaleplatform. When ,however,the scoop is placed on the platform, the projection thereon rests on thelong arm of the lever, forcing down the long arm of the lever, thusdepositing said second weight on its support, the permanent weight thenserving to balance the scoop, the load in which is carried by thescale-platform.

My invention is illustrated in the accompanying drawings, in whichFigure l is a perspective view of a scale, showing my invention, thescoop being removed and part of the scale being shown in section; andFig. 2 is a perspective View showing the scale-platform, partly insection, with the scoop applied.

In the drawings, 0 represents the rectangular base of a platform-scalesupported in the v usual way. f is the upright standard resting thereonand carrying the double beam 6, upon the parts of which move the poisess, all said parts being of usual construction.

The platform of the scale is represented at a, and is provided with twocurved slots b, adapted to receive downward projections h upon the scoopg. The platform is connected to the multiplying-levers and the beam inthe usual way. The scoop-balance lever is shown at Z and is pivotedbetween lugs 2', depending from the under side of the platform. ()ne'armof said lever carries the weight k, which is permanently attached to theend of said arm, while the end of the opposite or long arm of the lever,as shown at 'r, normally bears against the under side of the platform,the weight it normally tending to keep said arm m elevated. Attached tothe base 0 and projecting inwardly is a lug p, formed with an annularopen portion adapted to receive the weight 0, which has a loop a,adapted to be lifted by the long arm m, said loop fitting in a notch insaid arm m of the lever Z. The weight 0 should be of exactly the sameweight as the scoop g, and the permanent weight 70 should beapproximately the same weight. A variation, however, of one ounce, moreor less, will make no difference in the correct working of the device.

When it is not desired to use the scoop, the weight 70 pulls down thearm Z and raises the arm m, thus picking up the Weight 0, the point 7"bearing against the under sideof the scaleplatform, this beingaccomplished by placing the notch in which the weight 0 hangs nearer thefulcrum c than the permanent weight 70, so that the preponderance ofweight will be in favor of weight 70. When, however, the scoop is placedon the platform and the projections it pass through the openings Z), oneof these projections rests on the point r, and as the point r is fartherfrom the fulcrum 11 than the weight it the preponderance of weight isnow in favor of the scoop, which forces down the long arm of the leverZ, thus depositing the weight 0 in the ring adapted to receive it,inwhich position the lever m passes through the loop a without touching,the load in the scoop being carried by the scale-platform.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In combination with the platform of a scale, a scoop balancing devicecomprising a lever pivotally supported upon the platform, a weightpermanently secured to one arm thereof, a pick up weight having asupport independent of the scale platform but normally engaging theother arm of the lever and a scoop provided with a projection adapted tobear on one arm of said lever and cause the same to release the pick upWeights; substantially as described.

2. The herein described scoop balance device comprising a pivoted lever,having a weight permanently attached to one end thereof, a pickup weightadapted to engage the other arm thereof, a rigidly immovable support forsaid pick-up weight independent of the platform, and a scoop providedwith the projection adapted to engage one arm of said lever and releasethe same from its engagement with the pick-up weight; substantially asdescribed.

3. The herein described scoop balance device comprising a leverpivotally supported from the scale platform, a weight 70 permanentlyattached to one end of the short arm of said lever and normally tendingto keep the long arm elevated against the under side of the platform, asecond weight 0 supported from the scale frame and adapted to be engagedby the long arm m of the lever, and a scoop provided with a projectionadapted to engage the long arm of the lever, the two weightso and 7c andthe scoop being all approximately of the same weight, all substantiallyas described.

In testimony whereof I affix my signature in presence of two'witnesses.

FREDERICK W. TAYLOR.

Witnesses:

J. C. CLARK, WM. 0. TYLER.

